Fix load generation function for Terraform 3.0

src/testing/userload-generator/infra/main.tf

@@ -2,7 +2,7 @@ terraform {
   required_providers {
     azurerm = {
       source  = "hashicorp/azurerm"
-      version = "3.1.0"
+      version = "3.3.0"
     }
   }
 

src/testing/userload-generator/infra/master_functionapp.tf

@@ -25,18 +25,28 @@ resource "azurerm_linux_function_app" "master" {
     identity_ids = [azurerm_user_assigned_identity.functions.id]
   }
 
-  site_config {}
+  site_config {
+    application_stack {
+      dotnet_version = "6.0"
+    }
+
+    application_insights_connection_string = azurerm_application_insights.deployment.connection_string
+  }
 
   key_vault_reference_identity_id = azurerm_user_assigned_identity.functions.id
 
   app_settings = merge(
     local.function_names_per_geo,
     { for secret in azurerm_key_vault_secret.functionkeys : replace(upper(secret.name), "-", "_") => "@Microsoft.KeyVault(VaultName=${azurerm_key_vault.deployment.name};SecretName=${secret.name})" },
     {
-      "FUNCTIONS_WORKER_RUNTIME"              = "dotnet",
-      "APPLICATIONINSIGHTS_CONNECTION_STRING" = azurerm_application_insights.deployment.connection_string
-      "WEBSITE_MOUNT_ENABLED"                 = "1"
-      "WEBSITE_RUN_FROM_PACKAGE"              = "" # This value will be set by the Function deployment later
+      "WEBSITE_MOUNT_ENABLED"    = "1"
+      "WEBSITE_RUN_FROM_PACKAGE" = "" # This value will be set by the Function deployment later
     }
   )
+
+  lifecycle {
+    ignore_changes = [
+      app_settings["WEBSITE_RUN_FROM_PACKAGE"], # prevent TF reporting configuration drift after app code is deployed
+    ]
+  }
 }

src/testing/userload-generator/infra/modules/regional_function/functionapp.tf

@@ -32,18 +32,25 @@ resource "azurerm_linux_function_app" "regional" {
     application_stack {
       node_version = "14"
     }
+
+    application_insights_connection_string = var.application_insights_connection_string
   }
 
   app_settings = merge(
     var.additional_app_settings,
     {
-      "FUNCTIONS_WORKER_RUNTIME"       = "node"
       "PLAYWRIGHT_BROWSERS_PATH"       = "0"
       "ENABLE_ORYX_BUILD"              = "true"
       "SCM_DO_BUILD_DURING_DEPLOYMENT" = "true"
       "WEBSITE_MOUNT_ENABLED"          = "1"
       "WEBSITE_RUN_FROM_PACKAGE"       = "" # This value will be set by the Function deployment later
   })
+
+  lifecycle {
+    ignore_changes = [
+      app_settings["WEBSITE_RUN_FROM_PACKAGE"], # prevent TF reporting configuration drift after app code is deployed
+    ]
+  }
 }
 
 data "azurerm_function_app_host_keys" "regional" {

src/testing/userload-generator/infra/modules/regional_function/variables.tf

@@ -22,4 +22,8 @@ variable "function_user_managed_identity_resource_id" {
   type = string
 }
 
+variable "application_insights_connection_string" {
+  type = string
+}
+
 variable "default_tags" {}

src/testing/userload-generator/infra/monitoring.tf

@@ -0,0 +1,21 @@
+resource "azurerm_log_analytics_workspace" "deployment" {
+  name                = "${local.prefix}-loadgen-log"
+  location            = azurerm_resource_group.deployment.location
+  resource_group_name = azurerm_resource_group.deployment.name
+  sku                 = "PerGB2018"
+  retention_in_days   = 30 # has to be between 30 and 730
+  daily_quota_gb      = 30
+
+  tags = local.default_tags
+}
+
+resource "azurerm_application_insights" "deployment" {
+  name                 = "${local.prefix}-loadgen-appi"
+  location             = azurerm_resource_group.deployment.location
+  resource_group_name  = azurerm_resource_group.deployment.name
+  application_type     = "web"
+  workspace_id         = azurerm_log_analytics_workspace.deployment.id
+  daily_data_cap_in_gb = 30
+
+  tags = local.default_tags
+}

src/testing/userload-generator/infra/regional_functions.tf

@@ -6,10 +6,10 @@ module "regional_functions" {
   prefix              = local.prefix
   resource_group_name = azurerm_resource_group.deployment.name
   additional_app_settings = {
-    "APPLICATIONINSIGHTS_CONNECTION_STRING" = azurerm_application_insights.deployment.connection_string
-    "TEST_BASEURL"                          = var.targeturl
+    "TEST_BASEURL" = var.targeturl
   }
 
+  application_insights_connection_string     = azurerm_application_insights.deployment.connection_string
   function_user_managed_identity_resource_id = azurerm_user_assigned_identity.functions.id
 
   default_tags = local.default_tags